The invention discloses a damage-controllable self-resetting section prefabricated assembled steel pipe concrete bridge pier and a manufacturing method thereof, and belongs to the field of bridge engineering. An exposed node connecting piece consists of a foot plate, anchor bolts, end connecting plates and buckling restraining sleeves. A connecting plate is mounted between prefabricated steel pipe concrete sections through high-strength bolts; the exposed node connecting piece is connected with each of a cover beam and a bearing platform by utilizing the anchor bolts, and is connected with a prefabricated steel pipe concrete section through the high-strength bolts relying on the end connecting plates. A pre-stressed tendon penetrates through a section prefabricated steel pipe concrete pier; the two ends of the pre-stressed tendon are respectively anchored to the interiors of the bearing platform and the cover beam by using anchorage devices. The energy consumption-controllable self-resetting section prefabricated assembled steel pipe concrete bridge pier disclosed by the invention has the characteristics of small post-seismic residual displacement, high energy consumption capacity, controllable energy consumption, high assembling degree, convenience and quickness in construction process, greenness, high efficiency, energy conservation, environment friendliness, easiness in factory production, convenience and quickness in construction, and the like; the construction period of the pier can be remarkably shortened.

Damage-controllable self-resetting section prefabricated assembled steel pipe concrete bridge pier and manufacturing method thereof

The invention relates to a pile column type concrete hollow pile pier structure. The pile column type concrete hollow pile pier structure is characterized by comprising a concrete hollow pile pier, a bridge support, a pier cover beam and a base bearing platform, a flange disc is arranged at the lower end of the concrete hollow pile pier, a reserved bolt hole is formed in the flange disc, the flange disc is connected with the base bearing platform, the flange disc and the base bearing platform are arranged in cast-in-place concrete, an upper bridge support steel plate is arranged at the upper surface of the bridge support while a lower bridge support steel plate is arranged at the lower surface of the bridge support, a flange disc is arranged at the upper end of the concrete hollow pile pier and connected with the lower bridge support steel plate, and the upper bridge support steel plate is connected with the pier cover beam. The pile column type concrete hollow pile pier structure has beneficial effects that the concrete hollow pile pier can be prefabricated in a factory, the pier length can be controlled precisely, the bearing ability of the pier is improved, the concrete hollow pile pier is connected with the base bearing platform through using the flange discs and an insert core reinforcing cage and casting concrete in place, the connecting intensity of the pier can be guaranteed, and the stability thereof is improved.

Pile column type concrete hollow pile pier structure

The invention relates to a bag bottom expanding rigid-flexible combined pile. The bag bottom expanding rigid-flexible combined pile is formed by connecting the following prefabricated pipe piles including a TSC (prestress concrete thin wall concrete) pile, a PRC (prestress reinforcement concrete) pile and a PHC (prestress high-strength concrete) pile from top to bottom. The bottom end of the PHC pile is provided with a pile bottom expander packed by a bag; the inside of the prefabricated pipe piles is provided with a grouting duct; both ends of every pile is provided with perforated pipe pile joints, and the side wall of the pile at the bottom is provided with a grout outlet; the outside of the combined pile is packed by surrounding cemented soil. According to the bag bottom expanding rigid-flexible combined pile, based on the law of horizontal load bearing of the pile bodies inside soil, the prefabricated pipe piles with the anti-bending and anti-shearing performance gradually improved, which are connected in a combined mode, are sequentially planted inside the cemented soil, and the expanded is grouted after the bag with stable characteristics is set to improve the vertical bearing capacity of the piles, so that relatively higher technical and economical benefits can be obtained. The invention also discloses a construction method of the bag bottom expanding rigid-flexible combined pile.

Bag bottom expanding rigid-flexible combined pile and construction method thereof

The invention discloses a bolt connection-based rapid assembling precast rectangular concrete filled steel tube bridge pier, and belongs to the field of bridge engineering. The bolt connection-based rapid assembling precast rectangular concrete filled steel tube bridge pier comprises precast rectangular concrete filled steel tube sections, pre-buried nodes, connecting plates, high-strength bolts and core penetration bolts; each precast concrete filled steel tube section consists of a steel tube section, concrete, reserved core penetration bolt hole channels, reserved bolt holes, precast screw caps, a sealing material and PVC (Polyvinyl Chloride) tubes; each pre-buried node consists of a precast rectangular concrete filled steel tube section, a foot plate, outside-stiffened ribs and anchor bolts; bolt holes and core penetration bolt holes are formed in each connecting plate according to bolt design positions; adjacent precast concrete filled steel tube sections are connected with each other by the connecting plates, the high-strength bolts and the core penetration bolts. The bolt connection-based rapid assembling precast rectangular concrete filled steel tube bridge pier has the characteristics of high anti-pressure and anti-shear bearing capacity, excellent anti-seismic property, easiness in factory production, convenience and rapidness in site operation, energy conservation, environmental friendliness and the like.

Bolt connection-based rapid assembling precast rectangular concrete filled steel tube bridge pier

The invention discloses a concrete pipe pile automatic production line. The concrete pipe pile automatic production line is characterized by comprising a feeding region, wherein a concrete agitator and a distribution car are arranged in the feeding region; a mould combination region is arranged behind the feeding region; a crane which can move pipe moulds to the mould combination region is arranged between the feeding region and the mould combination region; a tensioning region is arranged behind the mould combination region; a tensioning machine is arranged in the tensioning region; a centrifugal region is arranged behind the tensioning region; a centrifugal machine is arranged in the centrifugal region; a normal temperature steaming and maintaining region is arranged behind the centrifugal region; a steaming and maintaining pond is arranged in the normal temperature steaming and maintaining region; a mould demounting region is arranged behind the normal temperature steaming and maintaining region; a releasing machine for demounting upper nuts of the pipe moulds is arranged in the mould demounting region; a woven cage region is arranged behind the mould demounting region; upper mould conveying chains and lower mould conveying chains for conveying the pipe moulds are respectively arranged on one sides or centers of the mould demounting region, the normal temperature steaming and maintaining region, a centrifugal region and a mould combination region, the crane is arranged between the woven cage region and the mould demounting region, and a high pressure steaming and maintaining region is arranged behind the woven cage region.

Concrete pipe pile automatic production line

The invention relates to a rotating type floating pile driving guide frame. The rotating type floating pile driving guide frame is characterized by comprising a positioning steel pile, a guide frame body and a pile holding device; the guide frame body comprises an upper guide frame and a lower guide frame, wherein each of the upper guide frame and the lower guide frame comprises a fixed truss, a standard section truss and a positioning truss which are connected from back to front in a sequence; the pile holding device is fixedly connected to each positioning truss; the upper guide frame is connected with the lower guide frame through a sleeve to form an integral same-group pile driving guide frame; the sleeve is fixedly connected to the inner side of a sleeve truss; a flange plate is fixedly connected to the lower end of the sleeve; a bracket is arranged at the lower end of the positioning steel pile; a reserved inserting hole is formed in the bracket; the sleeve is inserted into the positioning steel pile; the flange plate is connected with the bracket through an inserting pin. The rotating type floating pile driving guide frame has the beneficial effects that a base pile can be accurately positioned, and an inclined pile in any angle can be driven; all group file foundations can be built by one-time stopping of a ship, and therefore, the construction efficiency is greatly increased, and the construction cost of the ship can be decreased.

Rotating type floating pile driving guide frame

The utility model relates to a movable water piling limiting frame. The movable water piling limiting frame is characterized by comprising a central large steel column, a truss structure and a plurality of water accommodating cabins, wherein the central large steel column is fixedly connected to from an integral limiting frame structure through the truss structure; the central large steel column is fixedly connected with small steel columns at pile positions through transverse trusses; longitudinal trusses are connected among the small steel columns at the pile positions; transverse trusses are connected among the small steel columns at the pile positions; the water accommodating cabins are arranged in the integral limiting frame structure; the integral limiting frame structure is provided with an operating platform; pile embracing machines are mounted on the operating platform and the water accommodating cabins. The movable water piling limiting frame has the beneficial effects that the positions and verticality of sunk piles can be accurately controlled, subdivision partition boards are arranged in the water accommodating cabins, the stability of the limiting frame can be strengthened and the horizontal degree of the limiting frame can be adjusted through water injection in sub-cabins when the limiting frame is mounted, and thus the verticality of the sunk piles is ensured. The pile bracing machines are mounted on the limiting frame, and guiding limitation and fine adjustment of the verticality for the piles can be carried out during pile sinking.

Movable water piling limiting frame

The utility model relates to an industrial factory building framework structure adopting a precast concrete column structure. The industrial factory building framework structure is characterized by comprising a plurality of precast concrete columns, foundation platforms, connecting beams, flanges and roof trusses; the precast concrete columns are connected with the foundation platforms through bottom end flanges; the middle parts of the precast concrete columns are provided with lower middle flanges and upper middle flanges, the connecting beams and crane beams are arranged between the lower middle flanges and the upper middle flanges of the precast concrete columns, and the precast concrete columns are connected through the connecting beams to form the whole industrial factory building framework structure; the precast concrete columns are connected with the roof trusses through top end flanges and roof truss flanges, and the foundation platforms are connected through floor beams to form the foundation of the whole industrial factory building framework structure. The industrial factory building framework structure has the following advantages: the precast concrete columns can be precast in a factory, the quality of the columns is stable and reliable, the columns and the foundation are connected by using the corresponding flanges, so that the connection strength of the precast concrete columns can be ensured, and the period of construction is shortened greatly.

Industrial factory building framework structure adopting precast concrete column structure

The invention relates to a steam curing method for rapid high-freezing-resistance fence plate forming. The method comprises the following technology steps that a steel bar framework cage is prepared, and die filling is conducted; concrete mixture is prepared, a die is filled with the stirred concrete, a centrifugal motor at the die bottom face is used for vibration, the die and fence plates are hoisted into a steam-cured pond at the same time to be subjected to steam curing, the initial temperature ranges from 20 DEG C to 30 DEG C, and standing is conducted for 5.0 h in the steam-cured pond; the temperature is increased for 0.5 h to reach 50 DEG C; the constant temperature is kept for 5.0 h in the environment with the temperature being 50 DEG C; and steam supply is stopped, cooling is conducted for 0.5 h, the temperature is reduced to 20-30 DEG C, the steam-cured pond is uncovered, the die and the fence plates are hoisted out together, and finished fence plate products are hoisted out and stacked. The steam curing method has the beneficial effects that through a curing technology for adjusting formed prefabricated parts, the finished product speed, the finished product quality and the finished product yield of the fence plate products are improved. The compressive strength of the steam-cured fence plates meets the regulated requirement, and the freezing and thawing resisting performance reaches F350 or above.

Steam curing method for rapid high-freezing-resistance fence plate forming

The utility model relates to a box barrel type foundation water gate structure. The box barrel type foundation water gate structure comprises a box barrel foundation composed of a plurality of box barrels, connection walls and a cover plate. The box barrel type foundation water gate structure is characterized in that an upper water gate structure is arranged on the upper portion of the box barrel foundation; the upper water gate structure comprises upper low walls, cover plate upper end lower low walls, gate grooves, longitudinal walls, gates and a panel; the cover plate upper end lower low walls are fixedly connected to the cover plate of the box barrel foundation; the gate grooves are fixedly connected to the cover plate upper end lower low walls; the cross section of each gate groove is shaped like a Chinese character 'ao'; the upper low walls are fixedly connected to the gate grooves; through grooves are formed in the upper low walls in the longitudinal direction of the upper low walls; the gates penetrate through the through grooves in the upper low walls and are inserted into the gate grooves; the adjacent gate grooves are connected through the corresponding longitudinal walls in the longitudinal axis direction of the gate grooves; the panel is arranged at the upper ends of the upper low walls and the upper ends of the longitudinal walls. The box barrel type foundation water gate structure has the advantages that the box barrel foundation is adopted, it is guaranteed that pouring and installation of the water gate structure are both conducted above water, a cofferdam project is constructed in a segmented mode, and the complex process of underwater pouring is avoided.

Chen Qiang

Papers

Rotating type floating pile driving guide frame

Movable water piling limiting frame

Industrial factory building framework structure adopting precast concrete column structure

Steam curing method for rapid high-freezing-resistance fence plate forming

Box barrel type foundation water gate structure